Activity denture: also known as “living teeth”, is the use of natural teeth and abutments covered by mucous membrane, bone tissue for support, relying on the denture retainer and abutment retaining, is the wearer can be free to take a kind of restorations. Activity dentures are generally made of plastic and metal brackets, full and partial tooth loss can do activity dentures to restore the bite jaw function. As the movable denture is a kind of artificial imitation of teeth after tooth loss, in order to prevent complications, need to know some common sense, pay attention to its protection, cleaning and disinfection. 1, the first denture often have a sense of foreign body, unclear pronunciation, there may be chewing inconvenience, nausea and other uncomfortable feeling. When encountering such a situation, there is no need to be nervous and impatient, and should be worn patiently for 1 to 2 weeks to get used to it. 2, remove the denture, the beginning of inconvenience, should be patient practice, should not use violence to remove and wear, should be worn in the direction. Don’t bite the teeth when wearing the denture, so as not to break the ring or the denture, and should wear the denture according to the correct direction. 3. Because the chewing power and stability of movable denture is not as good as natural teeth, when you wear denture for the first time, you should practice eating soft food first, and then chew hard food gradually after you get used to it. 4. After wearing the denture for the first time, there may be mucous membrane compression phenomenon, which can lead to mucous membrane ulcers, you can temporarily remove the denture and immerse it in cold water, and you should wear the denture a few hours before the follow-up consultation in order to find out the pain points and facilitate the modification. 5.The denture should be removed and cleaned after meals to avoid the accumulation of food residues in the mouth unfavorable hygiene. 6, in order to reduce the burden on the supporting tissues, the denture should be stopped at night, cleaned, immersed in cold water, the denture should not be cleaned with boiling water to avoid deformation. 7.If there is any discomfort, it should be modified in time, and should not be left without denture for a long time. If the denture falls off and breaks, all the broken pieces should be brought to the hospital for examination and repair or redo according to the situation. 8, wear full denture should pay attention to, the patient’s mouth has no abutment teeth, at the same time alveolar bone due to tooth extraction after a certain degree of atrophy, so the first time to wear a denture will feel the fixation is more difficult, denture easy to loosen, fall off. General solution for the mouth to maintain a moderate amount of saliva, can increase the denture adsorption, wearing a full denture eating process should exercise bilateral chewing, in order to reduce the denture warping, dislodgement and fracture. Full denture for plastic teeth, eating upper and lower denture may produce collision and sound, should insist on wearing, in order to adapt to, the above symptoms will reduce or disappear. 9, denture use several years later, due to changes in the oral tissues or plastic performance changes, should be modified or redo, do not force to use, so as not to damage the natural teeth or other tissues in the oral cavity. What are the benefits of active denture The benefits of active denture is that patients can remove themselves for cleaning, inexpensive, less teeth grinding, but its volume is relatively large, the foreign feeling is obvious, need to be taken off every day to wear, there are metal rings impede the aesthetics, so most of the patients do not like the activity of the denture repair. However, in the following cases, only movable denture repair can be used: 1, the distal middle end of the tooth column is missing, that is, the last big tooth is missing. 2, When the number of consecutive missing teeth is large, and the span of missing teeth gap is large. 3.With severe jawbone defects, fixed restoration can not restore its ideal appearance and fullness. Benefits of removable denture: It is a removable denture that is fixed on the surrounding neighboring abutment teeth by metal hooks (called clasps in professional terminology). The advantages are that there is very little tooth grinding, the fabrication process is relatively simple, the price is low, and it can be used as a reversible restoration or transitional denture. The disadvantage is that it is large in size, has a thicker abutment to restore soft tissues such as the gums and to assist in retention and stabilization. Sometimes one side of the missing teeth depends on the other side of the teeth to be fixed. Activity denture benefits know, should also pay attention to: the first time to wear a period of adaptation, daily meals need to be removed after cleaning, there is a micro-movement, chewing efficiency is low, metal ring exposure affects the aesthetic impact, not timely cleaning under the base bracket or around the ring and caused by the accumulation of food scale, easy to cause caries in neighboring teeth.